The stakes in Los Angeles schools are so high that advocates sank $14 million into a school-board election — the most expensive in American history

The fight in the LAUSD pitted charter advocates and public employee unions against each other.AP Photo/Nick UtA rancorous Los Angeles Board of Education election came to an end Tuesday, securing a victory for charter advocates as they won their first majority on the seven-member board, the Los Angeles Times reported.

The long-running fight in the Los Angeles Unified School District, the second-largest school district in the US, pitted charter advocates and public employee unions against each other.

Charter schools are funded with taxpayer dollars but are privately run.

LAUSD has the most charter schools in the nation, and the majority-pro-charter school board now stands to rapidly expand this number.

It was also the most expensive school-board election in US history, with campaign spending totaling $14 million. Charter advocates largely outspent unions.

Netflix CEO Reed Hastings, a staunch supporter of charter schools, donated about $5 million to California Charter Schools Assn. Advocates, which organized spending for the campaign, The Times reported.

The battle between charter advocates and teachers unions who oppose the continued proliferation of charter schools has been building for some time. Political Action Committees spent $4.7 million to influence a Los Angeles Unified School Board election in 2015 that was considered to be a showdown between union-backed candidates and pro-charter supporters.